Lubricating means



Aug. 1933' F. ROLLER LUBRICATING' MEANS Filed Feb. 10, 1932 Patented Aug. 1, 1933 PATENT orrics L UBRICA'I'ING MEANS Franz Roller, Stuttgart-Wangen, Germany, as-

signor to Daimler-Benz Aktiengesellschaft, Stuttgart- Unterturkheim, Germany, a Company .of Germany Application February 10, 1932, Serial No. 592,109,

and

in Germany February 11, 1931 4 Claims. (01. 184-11) This invention relates to a particularly simple and suitable method of lubricating power-driven vehicles, in which parts disposed in a casing chamber are lubricated automatically from an adjacent casing chamber. sists in the employment of such an arrangement for differential gears with laterally pivoted driving shafts for swinging half axles.

In the accompanying drawing a constructional example of the invention is illustrated.

Fig. 1 shows a vertical section through a differential casing with laterally pivoted swinging axles,

Figs. 2 and 3 show two elevations at right angles to one another of a sheet metal stripping member of a peculiar form,

Fig. 4 is a horizontal section on the line 4-.4 of Fig. 2, and

Fig. 5 a cross-section through Fig. 1 in the plane of the stripping member.

a is the casing which contains the chamber b for the differential gear and the chamber c for the pivotal joint of the swinging axle, which can swing in 'the plane of the drawing about the axis e. The axle shaft 1 is connected by a Cardan joint 0 with the pivot pins h to the differential.

The lower part of the chamber b is filled with lubricating oil. The oil particles which are thrown about by the centrifugal action of the rotating parts are in part collected in a pocket or gutter i in the upper part of the chamber, from where the collected particles can pass through a bore k in the direction of the arrow into the chamber 0, flowing on to the tubular part 1 projecting into the chamber c of the rotary differential body which is connected to the blade wheel, where it adheres for instance to the annular projection m.

This oil is thentaken up by a sheet metal stripping member 11. fixed to the casing, which extends almost up to the surface of the projection and the cross-section of which is indicated at 0, and is forced by the bevelled edge 1: to the right into the reduced part q of the shaft, from where it is forced through adhesion and the centrifugal force of the rotating shaft along the reduced surface of the latter at 1' into the spherical surface and the pivot pins bearings of t. e Cardan joint. At s the oil which collects in the chamber can flow back again into the chamber a. 1 Other parts can of course be lubricated in). corresponding manner.

In Figs. 2 to 4 a somewhat modified device n, which consists of a sheet metal stamping, is shown in three views. The stripping edge 1) is produced by twisting the sheet metal member.

The invention con-- Special throwing devices can be provided on the differential body which convey the oil into the pocket 1'.

What I claim is: v

1. In a power-driven vehicle a gear casing, rotary gear members in the said casing, a pocket disposed laterally in the casing, in whichthe lubricating oil thrown about by the gear members can be caught, a casing chamber forming a lateral continuation of the gear casing, a driving shaft, a driven shaft and a joint having pivot pins for connecting the said two shafts in the said chamber, a connecting opening between the said pocket and the lateral casing chamber, and positioned to direct oil caught in the pocket to flow down into the casing chamber and on to one of the said shafts, in proximity to the pivot pins of said Joint so as'to enable the oil impinging on said shaft to be driven by centrifugal force into the joint, as set forth.

2. In a power-driven vehicle the combination claimed in claim 1, as applied to. driven swinging axles, the gear casing embracing the gear members of a differential gear and the laterally disposed casing chamber embracing the Cardan joint, which is adapted to connect a shaft driven by the diflerential gear with the axle shaft which drives the wheels, the oil which flows out of the pocket through the communicating opening impinging on the first-named shaft in proximity to the pivot pins of the Cardan joint so astoenabletheoilimpingingontheshafttobe driven into the pivot pins of the Cardan joint, as set forth.

3. In a power-driven vehicle the combination as claimed in claim 1 in combination with a sheet metal member fixed to the casing chamber, which extends down towards the shaft to which the oil is directed, said sheet metal member having a bowl which extends obliquely with respect to the longitudinal direction of the shaft to direct the flow of lubricant towards the joint.

4. In a power-driven vehicle the combination as claimed inclaim 1 in which the gear casing has a further opening between the lateral casing chamber and the gear casing, through which the oil collecting in the casing chamber can flow back into the gear casing, as set forth.

FRANZ ROLLER. 

